In the third Boys of Summer installment, Cristen and Caroline hat tip JK Starley, the engineer who invented the bicycle as we know it today, and explain how the bicycle was a transportation revolution for women.
Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htm
And to learn about your ad choices when listening to podcasts, visit
https://www.howstuffworks.com/privacy.htm#ad-choices
